Ors to ernest franctllon



(No Model.)

H. GERBER & H. AUDEMARS.

STEM WINDING AND SETTING WATOH.-

Patented Nov. 19, 1889.

I WITNESSES: T

a mvmrond div I H" ""LMWM M. J: 6 By I N. PETERS. Pholvlilhagraphar.wnhiwon. pc.

UNITED STATES PATENT OEEIcE.

HENRI GERBER, or sr. IMIER, AND HENRI AUDEMARS, OF BRASSUS, ASSIGN- oRsTO ERNEST FRANCILLON & 00., OF ST. IMIER, SWITZERLAND.

STEM WINDING AND SETTING WATCH.

SPECIFICATION forming part of Letters Patent No. 415,632, dated November19, 1889.

Application filed May 20, 1889. Serial No. 311,389. (No model.) i

To all whom it may concern.-

Be it known that we, HENRI GERBER, of St. Imier, Switzerland, and HENRIAUDEMARS, of Brassus, Switzerland, citizens of Switzerland, haveinvented a new and Improved Stem- Setting Attachment for WVatches, ofwhich the following is a specification.

This invention relates to improvements in that class of watches that areprovided with an oscillating or pivoted yoke carrying a central wheeland side wheels for engagement with the winding-wheel and thehands-settin g train, respectively.

The object of our invention is to facilitate inserting the push-pin andto engage the same with the yoke-operating lever, and to prevent thejumping of-the hands when bringing the setting-gear in engagement withthe handssett-ing wheels.

The invention consists in the construction and combination of parts anddetails, as will be fully described and set forth hereinafter, andfinally pointed out in the claims.

- In the accompanying drawings, Figure 1 is an elevation of the rearside of the main plate of a watch provided wit-h our improvements, thewheels of the movements being shown in dotted circles. Fig. 2 is a view,of that face of the main plate directly behind the dial, the wheelsbeing also represented by dotted circles. Fig. 3 is an enlarged detailhorizontal sectional view of the lever for operating the hands-settingtrain. 7

Similar letters of reference indicate corresponding parts.

The yoke Bis pivoted at B, and carries the centralwheel D, mounted toturn on the pivot of the yoke, and engaging the cog-wheel N, mounted toturn on one end of the yoke and adapted to engage the spring-barrelwheel L. The wheel D also engages the cog-wheel N on the opposite end ofthe yoke B, said wheel N being mounted to turn freely on the pivot n ofthe yoke B. A larger cog-wheel N also mounted loosely on the pivot n, isprovided with an'aperture 0, into which a pin 0 projects from the underside of the wheel N. Said Wheel N is adapted to be brought intoengagement with the pinion S, from which by suitable wheels the handswheels" can be moved. The tubular pinion P has a squared bore forreceiving the lower squared end of the puslrpin T, provided in itscylindrical part with the annular groove T, for receiving the end A of alever F, mounted to rock on the pivot O, which is screwed into the plateV, said pivot being provided with a shoulderplate 0 and a pin 0 betweenwhich pin C and shoulder-plate O the lever F is mounted on said pin 0.The outer end of the screwpivot O is provided with a notch C forreceiving a screw-driver. The opposite end of the lever F is providedwith the notch F for receiving a pin Q, projecting from a cam V, thatcan act on one end of the yoke B, said pin passing through a suitableslot V in the plate WV. The cam V is pivoted at V. A spring R, fixed 011the plate W, presses one end of the yoke B against the cam V. To insertthe push-pin, the pivot G is turned by means of a screw-driver in such amanner that it moves outward from the plate TV, as indicated by thearrow X in Fig. 3,whereby the end A of the lever F is moved out of theannular groove T of the push-pin. WVhen the lever F is in this position,the push-pin can be inserted or withdrawn. After the push-pin has beeninserted the pivot O is turned in the inverse direction and screwed intothe plateNV,whereby the lever F is moved in the inverse direction of thearrow X The end A of said lever passes into the annular groove T, and itis thus a very simple and easy matter to remove the push-pin from themovement or to replace the same. By pulling the push-pin outward the camis swung downward and brings the wheel N in engagement with thehands-setting train, so that by turning the push-pin the hands can beset. WVhen the push-pin is pushed inward, the cam V is swung-back intothe position shown in Fig. 2, the spring R throws the yoke back into theposition shown in Fig. 2, the wheel N being engaged with thespring-barrel wheel L, and the watch is then Wound by turning thepush-pin. In case the ends of the teeth of the wheel NZwhen the same isbrought into engagement with the pinion S, strike the ends of the teethof the pinion S, said wheel can give slightly, as its aperture 0 islarger than the pin 0 in the wheel N thus permitting the proper meshingof the'teeth N with the teeth of the pinion S Without causing jumping ofthe hands, as many stem-Winding attachments to watches do.

Having thus described our invention, we claim asnew and desire to secureby Letters Patent- 1. In a watch, the combination, with a pivoted yokecarrying a central wheel engaged with a tubular pinion, of awheelmounted on one end of the yoke and engaged with the central wheel andadapted to engage the spring barrel wheel, a cog wheel mounted looselyon a' pivot on the opposite end of the yoke and engaging the centralwheel of the yoke, and provided with a pin projecting from v one of itsfaces, an additional wheel mounted loosely on the same pivot of the yokewith the wheel having the pin, said additional wheel having-an aperturelarger than the pin and into which aperture the pin projects, saidadditional Wheel being adaptedto engage the hands-setting wheels,whereby the jumping of the hands is avoided when the yoke is adleverhaving one end in said groove of the push-pin, and a screw-pivot whichis screwed in the main plate, and provided with a shoulder or disk onwhich the lever mounted on said pivot rests, and a pin passed throughthe pivot at the opposite side of the lever, for the purpose ofconfining said lever between the shoulder and pin and preventing it frommoving longitudinally on the pivot, substan- 4o tially as set forth.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

HENRI GERBER. HENRI AUDEMARS.

l/Vitnesses:

MAX WEIDEMANN, ARTHUR MIZIRILLAT.

